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奇妙的金属有机骨架材料介绍和性质
Chen, X. M., Inorg. Chem., 2009, 3882-3889
Langmuir surface area 195m2/g BET surface area 155m2/g
1.56 CO2 molecules per unit pore
Langmuir surface area, 1100m2/g, BET surface area, 914m2/g Pore volume, 0.39cm3/g
N2 adsorbed in the pore, 337mg/g
Yaghi, O.M., Science, 2008,319, 939-943
Zeolitic imidazolate frameworks (ZIFs) 1, tetrahedral frameworks 2, high thermal stability (up to 390 degree) 3, high porosity (>1970m2/g) 4, unusual selectivity for CO2 capture from CO2/CO mixtures
ZIF-69, 83L CO2/per L at 273K
Yaghi, O.M., Science, 2008,319, 939-943
Yaghi, O.M., Nature, 2008,453, 207-211
N2 adsorption isotherms at 77K
The CO2/CO adsorption isotherms for ZIF-69 at 273K
ZIF 95, 1240m2/g, 0.43cm3/g ZIF 100, 780m2/g, 0.37cm3/g
Gas adsorption isotherms of ZIF-95 (77K) and ZIF-100 (87K)
Yaghi, O.M., Nature, 2008,453, 207-211
Yaghi, O.M., J. Am. Chem. Soc., 2009,8875-8883
COF 102, 72mg/g H2 77K; 187mg/g CH4, 1180mg/g CO2, 298K
Low-pressure H2 isotherms at 77K
High-pressure H2 isotherms at 77K
Secondary building units (SBUs) a, the squre “paddlewheel” cluster. b, the octahedral “basic zinc acetate” cluster. c, the trigonal prismatic oxo-centered trimer.
奇妙的金属有机骨架材料 介绍和性质
环境污染与能源危机
温室气体效应
根据联合国政府间气候变化专 门 委 员 会 ( IPCC ) 规 定 , 目 前由人类活动引起的大量聚集 在大气中的温室气体主要是二 氧化碳、甲烷、一氧化氮、六 氟化硫和两组工业气体氢氟烃 (HFCs)和全氟烃(PFCs)
解决办法 1,捕获并存储排放的气体 2,开发基于氢的清洁能源
MIL 88D
No Image
Ferey, G. et al, Science, 2007,315,1828-1831
Selectivity adsorption for CO2 over CH4 in MIL 53
Yaghi, O.M., J. Am. Chem. Soc., 2008,130, 11580
能将存储功能与催化作用结合,将捕获的二氧化碳转化为有 用的燃料如甲醇,能用作车载储氢材料
国际能源暑(IEA)提出 的氢能源实用化的目标:
质量储氢率5%,体积储 氢率50g/L,
美国能源部(DOE)提出的 氢能源实用化的目标:
质量储氢率6.5%,体积储氢 率62g/L,车用储氢能力3.1kg
气体吸附与存储
Covalent organic fhi, O.M., Science, 2005,310, 1166-1170
COF 1, pore size 7 angstroms, 500 degree, 711m2/g
COF 5, pore size 27 angstroms, 600 degree, 1590m2/g
Ferey, G. et al, Science, 2005,309,2040-2042
MIL 100 and MIL 101
MIL 101, H2, 77K, 6.1wt% pore size, 30-40 angstroms
Langmuir surface area for N2, 5900m2/g CO2, 400m3 per m3 MIL 101
新材料存储 金属有机骨架材料MOFs
什么是金属有机骨架材料MOFs ?
Cu
Ag
配体的种类
金属有机骨架材料MOFs的奇妙之处:
有大的表面积与质量比,能象海绵吸水那样吸收大量气体,比沸石 和活性碳好,能用于气体存储、气体分离。
能用作传感器、缓 释药品的给药载体。
能用作发光材料、 磁性材料。
Shaped bodies made from MOF materials
MOF-5, Zn4O(BDC)3 MOF-177, Zn4O(BTB)3
Yaghi, O.M., J. Am. Chem. Soc., 2008,130, 11580
A large series of isoreticular metal-organic (IRMOFs) were produced by Yaghi group
High-pressure CH4 isotherms at 298K
H2-storage capacities for different MOFs
Yaghi, O.M., Science, 2010,329, 424-428 MOF-177
MOF-180
MOF-200
MOF-205
MOF-210